Fix 1

When you install the package, you have to override the permissions for the packages.

How?

1) Open system preferences > security & privacy on the "general" tab below the line (the bit where it says "apps downloaded from") are applications you try to install which are not properly signed by the original provider.

You have to "open" them from here, which then pops up another dialogue saying "do you want to open this application", say "yes"

2) Now you can install the package, but...

2.1) I received a "BasicOptionDPE.bundle" is damaged message. Fix that following the above System Preferences process.

2.2 ) When you try to add the printer, it may complain, so leave open the systems preferences security page, and say "open" if any more security issues happen.

3) add a printer, bonjour should find the printer, it will identify with AirPrint, change use to "Samsung 2020 series" (in my case)

4) You now have a printer, but if you try to use it you have more errors, so lets fix them too.

4.1) Open textedit , and put some data into it.

4.2) Apple+P to Print, now you will  get errors about prefilter and rastertosec packages. So you have to force sign them in the System Preferences too

5) NOW you should be able to print.